<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8" />
		<meta http-equiv="X-UA-Compatible" content="IE=edge">
		<meta name="viewport" content="width=device-width, initial-scale=1">
		<title>本地websocket测试</title>
		<meta name="robots" content="all" />
		<meta name="keywords" content="本地,websocket,测试工具" />
		<meta name="description" content="本地,websocket,测试工具" />
		<style>
			.btn-group{
				display: inline-block;
			}
		</style>
	</head>
	<body>
		<input type='text' value='通信地址, ws://开头..' class="form-control" style='width:390px;display:inline'
		 id='wsaddr' />
		<div class="btn-group" >
			<button type="button" class="btn btn-default" onclick='addsocket();'>连接</button>
			<button type="button" class="btn btn-default" onclick='closesocket();'>断开</button>
			<button type="button" class="btn btn-default" onclick='$("#wsaddr").val("")'>清空</button>
		</div>
		<div class="row">
			<div id="output" style="border:1px solid #ccc;height:365px;overflow: auto;margin: 20px 0;"></div>
			<input type="text" id='message' class="form-control" style='width:810px' placeholder="待发信息" onkeydown="en(event);">
			<span class="input-group-btn">
				<button class="btn btn-default" type="button" onclick="doSend();">发送</button>
			</span>
			</div>
		</div>
	</body>		
		
		<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
		<script language="javascript" type="text/javascript">
			function formatDate(now) {
				var year = now.getFullYear();
				var month = now.getMonth() + 1;
				var date = now.getDate();
				var hour = now.getHours();
				var minute = now.getMinutes();
				var second = now.getSeconds();
				return year + "-" + (month = month < 10 ? ("0" + month) : month) + "-" + (date = date < 10 ? ("0" + date) : date) +
					" " + (hour = hour < 10 ? ("0" + hour) : hour) + ":" + (minute = minute < 10 ? ("0" + minute) : minute) + ":" + (
						second = second < 10 ? ("0" + second) : second);
			}
			var output;
			var websocket;
 
			function init() {
				output = document.getElementById("output");
				testWebSocket();
			}
 
			function addsocket() {
				var wsaddr = $("#wsaddr").val();
				if (wsaddr == '') {
					alert("请填写websocket的地址");
					return false;
				}
				StartWebSocket(wsaddr);
			}
 
			function closesocket() {
				websocket.close();
			}
 
			function StartWebSocket(wsUri) {
				websocket = new WebSocket(wsUri);
				websocket.onopen = function(evt) {
					onOpen(evt)
				};
				websocket.onclose = function(evt) {
					onClose(evt)
				};
				websocket.onmessage = function(evt) {
					onMessage(evt)
				};
				websocket.onerror = function(evt) {
					onError(evt)
				};
			}
 
			function onOpen(evt) {
				writeToScreen("<span style='color:red'>连接成功，现在你可以发送信息啦！！！</span>");
			}
 
			function onClose(evt) {
				writeToScreen("<span style='color:red'>websocket连接已断开!!!</span>");
				websocket.close();
			}
 
			function onMessage(evt) {
				writeToScreen('<span style="color:blue">服务端回应&nbsp;' + formatDate(new Date()) + '</span><br/><span class="bubble">' +
					evt.data + '</span>');
			}
 
			function onError(evt) {
				writeToScreen('<span style="color: red;">发生错误:</span> ' + evt.data);
			}
 
			function doSend() {
				var message = $("#message").val();
				if (message == '') {
					alert("请先填写发送信息");
					$("#message").focus();
					return false;
				}
				if (typeof websocket === "undefined") {
					alert("websocket还没有连接，或者连接失败，请检测");
					return false;
				}
				if (websocket.readyState == 3) {
					alert("websocket已经关闭，请重新连接");
					return false;
				}
				console.log(websocket);
				$("#message").val('');
				writeToScreen('<span style="color:green">你发送的信息&nbsp;' + formatDate(new Date()) + '</span><br/>' + message);
				websocket.send(message);
			}
 
			function writeToScreen(message) {
				var div = "<div class='newmessage'>" + message + "</div>";
				var d = $("#output");
				var d = d[0];
				var doScroll = d.scrollTop == d.scrollHeight - d.clientHeight;
				$("#output").append(div);
				if (doScroll) {
					d.scrollTop = d.scrollHeight - d.clientHeight;
				}
			}
 
 
			function en(event) {
				var evt = evt ? evt : (window.event ? window.event : null);
				if (evt.keyCode == 13) {
					doSend()
				}
			}
		</script>
 
</html>
